NS-9A Check Fuel Control System For Fault Codes

COMPLETE NO START TEST 1-STEP A BEFORE PROCEEDING.
1. Connect diagnostic readout box to the engine harness connector, then enter system into Diagnostic Test Mode and record all codes.
2. If no fault codes are displayed, perform Driveability Test 1.
3. If code sequence is 88-12-26-55, an injector driver circuit fault is present. Proceed to Test 10.
4. If code sequence is 88-12-27-55, an injector control circuit fault is present. Proceed to Test 11.